EP0444540A1 - Malaxeur - Google Patents

Malaxeur Download PDF

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Publication number
EP0444540A1
EP0444540A1 EP91102577A EP91102577A EP0444540A1 EP 0444540 A1 EP0444540 A1 EP 0444540A1 EP 91102577 A EP91102577 A EP 91102577A EP 91102577 A EP91102577 A EP 91102577A EP 0444540 A1 EP0444540 A1 EP 0444540A1
Authority
EP
European Patent Office
Prior art keywords
drum
swivel arm
reduction gear
mixer according
eccentric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91102577A
Other languages
German (de)
English (en)
Other versions
EP0444540B1 (fr
Inventor
Peter Dipl.-Ing. Kasberger (Fh)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lescha Maschinenfabrik GmbH and Co KG
Original Assignee
Lescha Maschinenfabrik GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lescha Maschinenfabrik GmbH and Co KG filed Critical Lescha Maschinenfabrik GmbH and Co KG
Priority to AT9191102577T priority Critical patent/ATE104586T1/de
Publication of EP0444540A1 publication Critical patent/EP0444540A1/fr
Application granted granted Critical
Publication of EP0444540B1 publication Critical patent/EP0444540B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/0806—Details; Accessories
    • B28C5/0831—Drives or drive systems, e.g. toothed racks, winches
    • B28C5/0837—Drives for mixers of the tilted-drum type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/18—Mixing in containers to which motion is imparted to effect the mixing
    • B28C5/1825—Mixers of the tilted-drum type, e.g. mixers pivotable about an axis perpendicular to the axis of rotation for emptying
    • B28C5/1887—Mobile or portable devices, e.g. for use by do-it-yourself enthousiasts

Definitions

  • the invention relates to a mixer, in particular a building material mixer, with a drum which is mounted on the bottom on a swivel arm and which can be driven by means of a drive device having at least one motor and a reduction gear, the bottom of which is double-walled to accommodate two drum bearings.
  • the drum is surrounded by a toothed ring, in which a pinion arranged coaxially to the pivot axis of the swivel arm engages, which can be driven via a gear train on a motor arranged on the frame. Arrangements of this type lead to a comparatively high level of noise.
  • gearless mixers of the type mentioned above have also become known.
  • the swivel arm is provided with the drive device on the side opposite the drum. This is therefore opposite to the drum from the swivel arm.
  • the disadvantage here is that protrude from the swivel arm due to the opposite direction to the drum Drive device such a large swivel envelope results that collisions are to be feared when pushing a wheelbarrow under.
  • the drive device is arranged at least partially in the area between the bearings of the drum.
  • the drive device is advantageously placed at least partially in the chamber present in the region of the double wall of the drum base.
  • the chamber resulting from the double wall of the drum base advantageously functions as an installation space at the same time, in that the drive device can be accommodated in whole or in part.
  • a reduction or complete elimination of the protrusion of the drive device via the swivel arm can advantageously be achieved.
  • the reduction gear is designed as an epicyclic gear, preferably as a reduced epicyclic gear in the form of a cyclo-gear or the like.
  • Such a transmission is particularly flat, which enables a particularly flat cross-section of the chamber present in the region of the double wall, which does not impair the mixing properties of the drum.
  • the drive motor which is designed as an electric motor, is arranged within the double-walled region of the drum base is.
  • the drive motor can be designed as an external rotor motor, the central stator of which is connected in a rotationally fixed manner to a kingpin which is attached to the swivel arm and which receives the drum bearings and which has a cable duct, and the external rotor mounted thereon is flanged to the drive side of the reduction gear .
  • an insulation sleeve preferably designed as a torque transmission element, can be arranged between the stator and the kingpin, which can be provided with front-side insulating collars for further improvement.
  • the building material mixer shown in Figure 1 consists of a drum 1, which is rotatably received coaxially to its axis of symmetry on a swivel arm 2, which in turn is mounted here on both sides on an H-shaped machine frame 3. This is provided on the one hand with a stand and on the other hand with castors.
  • the swivel arm 2 mounted on both sides here forms a bracket encompassing the drum 1 on the bottom.
  • a swivel arm which is only supported on one side and on which the drum 1 is accommodated.
  • the swivel arm 2 and with it the drum 1 received on it can be swiveled by means of a swivel device here in the form of a handwheel 4 and can be fixed in the desired swivel position by means of a latching device, here in the form of a latching disk 5.
  • the drum 1 In the filling and mixing position, the drum 1 is usually set so that its opening 6 points obliquely upwards. To empty the drum 1, it is pivoted so that its opening 6 points obliquely downwards.
  • the drum 1 is overhung in the region of the drum base 7 opposite the drum opening 6.
  • two drum bearings 8, 9 are provided in the region of the drum base 7, with which the drum 1 can be mounted on an axle or shaft mounted on the swivel arm 2.
  • the drum 1 is double-walled in the region of the drum base 7.
  • the lower part of the drum is provided on the bottom with an inwardly projecting pot 10, onto which a cover 11 which lies against the edge is placed.
  • This can be designed as a cast or sheet metal blank.
  • the pot 10 is simply molded onto the lower drum part 1 a formed as a deep-drawn molding.
  • a chamber 12 is delimited by the pot 10 and lid 11.
  • the drive device assigned to the drum 1 is wholly or partly accommodated in this chamber.
  • This contains a drive motor 13 and a reduction gear 14 connected on the input side to the drive motor and on the output side to the drum, by means of which the high motor speed is reduced to the desired drum speed.
  • a reduction ratio of the order of 50: 1 is required for this.
  • the chamber 12 serves as Installation space for the reduction gear 14.
  • the drive motor 13 is accommodated on the swivel arm 2, which enables simple air cooling of the motor.
  • the chamber 12 serves as installation space for the drive motor 13 and the reduction gear 14, which results in a particularly compact arrangement and automatically leads to a complete encapsulation of the entire drive device within the chamber 12.
  • the reduction gear 14 is designed as a flat planetary gear.
  • the reduction gear 14 is constructed in the manner of a so-called cyclo-gear.
  • This is a so-called reduced epicyclic gear, which has at least one torkel disc 16 mounted on a drivable eccentric 15 and accordingly eccentrically revolving, which is provided with bores 17 arranged on a pitch circle concentric with respect to its axis, into which bores the double eccentricity of the eccentric 15 engage weaker pins 18 which are fastened to a pin carrier 19 which is concentric with the rotational axis a of the eccentric 15, and which has an outer ring 20 which includes the torsion plate 16.
  • the torsion plate 16 is toothed on the outside.
  • the outer ring 20 is toothed on the inside.
  • the pitch circle diameter of the toothing of the outer ring 20 is twice the eccentricity of the eccentric 15 larger than the pitch circle diameter of the toothing of the torsion plate 16, so that the outer toothing of the torsion plate 16 engages in an engagement area of approximately 80 ° facing the elevation of the eccentric 15 is the internal toothing of the outer ring 20, which is arranged coaxially to the pin carrier 19 and accordingly coaxial to the circumferential axis a of the eccentric 15.
  • the number of teeth of the outer ring 20 is larger, preferably by one tooth, than the number of teeth of the torsion plate 16.
  • the torsion disk 16 rolls on the outer ring 20, the desired high reduction ratio being able to be achieved due to the low difference in the number of teeth of about three teeth.
  • either the pin carrier 19 or the outer ring 20 is held.
  • the other element rotates around axis a.
  • the held element is connected directly or indirectly to the swivel arm 2.
  • the rotating element is connected to the drum 1 to be driven.
  • the pin carrier 19 is held and the outer ring 20 is connected to the drum 11.
  • the outer ring 20 can be molded onto such a casting, as shown in FIG. 3.
  • the reduction gear 14 is located on the side of the motor 13 facing the cover 11.
  • the outer ring 20 is accordingly molded onto the cover 11 designed as a cast part.
  • the outer ring 20 is designed as an inserted part.
  • the pot 10 is provided with an integrally formed depression into which the outer ring 20 attached to the drum is inserted.
  • the pin carrier 19 is fixed relative to the swivel arm 2.
  • the eccentric 15 of the reduction gear 14 is driven by a drive shaft 21 which is mounted on the swivel arm 2.
  • the eccentric 15 can be integrally formed on the drive shaft 21, which is simply designed as a crankshaft for this purpose.
  • the drive shaft 21 is provided on the drum side with a pin adjacent to the eccentric 15 and concentric with the axis a, on which the inner drum bearing 8 is received.
  • the outer drum bearing 9 is received here on a bush 22 which is penetrated by the drive shaft 21 and fastened to the swivel arm 2.
  • the external drive motor 13 is accommodated on the swivel arm 2 with an axis offset parallel to the axis a.
  • the drive motor 13 can be arranged on the side of the swivel arm 2 facing the drum 1, so that there is no projection on the side facing away from the drum 1.
  • the drive motor 13 is arranged in a corner of the swivel arm 2 designed as a U-shaped bracket or angle bracket.
  • the drive shaft 21 is provided with a drive element, here in the form of a pulley 23, which is connected to the output element 25 of the drive motor 13 by means of a transmission element, here in the form of a V-belt 24.
  • a belt countersink makes it easier to achieve reliable protective insulation for the mixer.
  • the drive motor 13 can additionally be insulated from the swivel arm 2 by an insulating plate and / or an insulating screw connection.
  • the drive motor 13 arranged outside the chamber 12 can be designed as an internal combustion engine, which due to its arrangement on the swivel arm 2 should be provided with forced lubrication.
  • an electric motor is used. This can be provided with a fan wheel 26 in order to achieve reliable air cooling.
  • the external drive motor 13 is overlapped here by a protective hood 27 accommodated on the swivel arm 2.
  • the motor 13 is received here in a bush 36 of the swivel arm 2 which is approximately coaxial with the drive shaft 21.
  • This is an electric motor designed as an internal rotor motor, the stator of which is flanged to a flange 37 fastened to the bush 36 and the rotor of which can be keyed onto the drive shaft 21 to which the eccentric 15 is fastened.
  • a fan wheel 26 is placed on the end of the motor shaft which forms the drive shaft 21 and projects behind it, which is arranged behind a cover 38 fastened to the outer end of the sleeve. This can be a not shown here, have multiple deflected air intake duct and / or blow-out duct, which provides full protection against contact and splash water.
  • the present embodiment can correspond to the arrangement according to FIG. 2, which shows the upper half of the reduction gear 14.
  • FIG. 2 shows the upper half of the reduction gear 14.
  • the pin 18 is stationary, here connected to the pot 10, and the outer ring 20 is driven.
  • the eccentric 15 of the reduction gear 14 is flanged directly onto the rotor of the drive motor 13 arranged here inside the chamber 12 and adjacent to the reduction gear 14.
  • the drive motor arranged inside the chamber 12 can be a normal internal rotor motor with a driven motor shaft, to which the eccentric 15 could be molded or flanged.
  • the drive motor 13 is designed as an external rotor motor with a central stator 28 and a drivable housing 29 encompassing it. This design results in a particularly good cooling effect, since here the air in the space surrounding the motor can be kept in good motion, so that the heat can be reliably transferred to the pot 10 and transported away from it. To improve the heat dissipation, this can be provided with cooling fins 12a projecting into the chamber 12.
  • the swivel arm 2 is provided for receiving the drum 1 with a king pin 30 attached to it, on which the stator 28 is fixed in a rotationally fixed manner.
  • a torque transmission bushing 31 with a toothed cross section is used, which is simultaneously designed as an insulating bushing, by means of which the current-carrying stator 28 is electrically insulated from the kingpin 30. Accordingly, this is also provided with all-round insulating strips in the area of its end faces.
  • the inner drum bearing 8 is received directly on the drum-side end of the kingpin 30.
  • the outer drum bearing 9 is seated on a collar of the pin carrier 19 penetrated by the king pin 30, which is firmly connected here to the king pin 30 and is hereby fixed to the swivel arm 2.
  • the reduction gear 14 is accordingly located on the side of the drive motor 13 facing the cover 11.
  • the current supply to the current-carrying stator 28 runs here within the swivel arm 2 and the kingpin 30.
  • a channel 32 which is designed here as a groove, in which a cable 33 can be laid, which via a radial bore in the bushing 31 is received thereon Stator 28 can be performed can.
  • the swivel arm 2 is formed by a hollow profile, in which a channel 34 for the cable 33 automatically results. This is guided in the channel 34 to a switch-plug combination 35, which is fastened to the swivel arm 2 or to the frame 3 and is shown in FIG. 1 and to which a connecting cable can be coupled.
  • slip ring contacts that are not visible are provided in the area of the switch / plug combination 35.
  • the plug collar for coupling a connection cable can be fixed relative to the frame, so that the connection cable is not stressed even in the case of repeated 360 ° rotations of the swivel arm 2.
  • the switch-plug combination 35 can be attached to one of the pivot pins of the pivot arm 3 and to arrange it so that it is pivoted together with the pivot arm 2.
  • the coupled connecting cable also allows a swiveling movement, also in the form of a 360 ° rotation of the swivel arm 2.
  • the pivotability of the swivel arm 2 can expediently be limited by a stop.
  • a movable cable loop is provided instead of slip ring contacts.
  • its torsion plate 16 and outer ring 20 can each have involute teeth, several teeth, for example three teeth, can be combined to form a unit tooth in order to widen the foot and to avoid constraining forces in the mutual interference a head shortening of the order of 5% can be made.

Landscapes

  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Retarders (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Road Paving Machines (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing Of Solid Wastes (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Food-Manufacturing Devices (AREA)
  • Disintegrating Or Milling (AREA)
  • Road Repair (AREA)
  • Confectionery (AREA)
EP91102577A 1990-03-01 1991-02-22 Malaxeur Expired - Lifetime EP0444540B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT9191102577T ATE104586T1 (de) 1990-03-01 1991-02-22 Mischer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4006434 1990-03-01
DE4006434A DE4006434A1 (de) 1990-03-01 1990-03-01 Mischer

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP93106511.4 Division-Into 1991-02-22

Publications (2)

Publication Number Publication Date
EP0444540A1 true EP0444540A1 (fr) 1991-09-04
EP0444540B1 EP0444540B1 (fr) 1994-04-20

Family

ID=6401203

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91102577A Expired - Lifetime EP0444540B1 (fr) 1990-03-01 1991-02-22 Malaxeur

Country Status (9)

Country Link
US (1) US5190372A (fr)
EP (1) EP0444540B1 (fr)
AT (1) ATE104586T1 (fr)
AU (1) AU641983B2 (fr)
DE (2) DE4006434A1 (fr)
ES (1) ES2055931T3 (fr)
FI (1) FI910849L (fr)
NO (1) NO176998C (fr)
PL (1) PL167077B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1925414A3 (fr) * 2006-11-21 2009-08-19 Imer International S.p.A. Mélangeur à béton
WO2009081437A3 (fr) * 2007-12-21 2009-09-03 Imer International S.P.A. Mélangeur de béton

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9114605U1 (de) * 1991-11-23 1992-02-20 Lescha Maschinenfabrik GmbH & Co KG, 8900 Augsburg Arbeitsmaschine, insbesondere Mischer
AU680805B3 (en) * 1996-10-14 1997-08-07 George Anthony Contoleon Craddle cement mixer
GB0402769D0 (en) * 2004-02-09 2004-03-10 Bella Engineering Sheen Ltd A mixer
US7048430B2 (en) * 2004-03-22 2006-05-23 Birmingham Sr David L Hydraulic concrete mixer
DE102020213365A1 (de) * 2020-10-22 2022-04-28 Robert Bosch Gesellschaft mit beschränkter Haftung Exzentergetriebe für einen Bremskrafterzeuger, Bremskrafterzeuger
IT202300001467A1 (it) * 2023-01-31 2024-07-31 Imer Int S P A Betoniera.
CN116872355B (zh) * 2023-09-06 2023-11-14 福建省德化胜东陶瓷有限公司 一种陶瓷制品生产搅拌混料装置及其方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH132684A (de) * 1928-02-17 1929-04-30 Falleroni Francesco Selbstbremsender Geschwindigkeitsverminderer.
CH254737A (it) * 1944-10-24 1948-05-31 Ossiam Akesson Nils Mescolatore per calcestruzzo, pasta od altri materiali.
GB916181A (en) * 1960-09-27 1963-01-23 Liner Concrete Machinery Compa Improvements in or relating to mixing machines
US3658303A (en) * 1969-10-17 1972-04-25 Funk Mfg Co Drive mechanism for concrete mixer

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE284365C (fr) *
US1513337A (en) * 1920-09-09 1924-10-28 Melotte Alfred Means for electrically driving the bowls of centrifugal separators
GB184536A (en) * 1921-04-12 1922-08-14 George William Kebb Improvements relating to eccentrics
FR660028A (fr) * 1927-09-09 1929-07-05 Perfectionnement dans les engrenages de réduction
US1767866A (en) * 1927-11-10 1930-06-24 Wildhaber Ernest Gearing
US2179970A (en) * 1936-12-28 1939-11-14 David A Wallace Pigment mixing apparatus
US2170951A (en) * 1937-12-06 1939-08-29 Fred W Coffing Continuous power eccentric dual gear speed reducer
US3304808A (en) * 1964-11-05 1967-02-21 Allied Machine & Eng Corp Reversing and reduction gear
US4027541A (en) * 1974-05-14 1977-06-07 Matsushita Electric Industrial Co., Ltd. Electronic component having a fine adjustment mechanism
SU1364486A1 (ru) * 1985-09-06 1988-01-07 Центральный Научно-Испытательный Полигон-Филиал "Вниистройдормаш" Редуктор привода смесительного барабана автобетоносмесител
US4884473A (en) * 1987-02-09 1989-12-05 Lew Hyok S Dual epicyclic speed changer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH132684A (de) * 1928-02-17 1929-04-30 Falleroni Francesco Selbstbremsender Geschwindigkeitsverminderer.
CH254737A (it) * 1944-10-24 1948-05-31 Ossiam Akesson Nils Mescolatore per calcestruzzo, pasta od altri materiali.
GB916181A (en) * 1960-09-27 1963-01-23 Liner Concrete Machinery Compa Improvements in or relating to mixing machines
US3658303A (en) * 1969-10-17 1972-04-25 Funk Mfg Co Drive mechanism for concrete mixer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1925414A3 (fr) * 2006-11-21 2009-08-19 Imer International S.p.A. Mélangeur à béton
WO2009081437A3 (fr) * 2007-12-21 2009-09-03 Imer International S.P.A. Mélangeur de béton

Also Published As

Publication number Publication date
NO176998C (no) 1995-07-05
NO910717L (no) 1991-09-02
PL289205A1 (en) 1992-02-24
DE59101413D1 (de) 1994-05-26
EP0444540B1 (fr) 1994-04-20
ES2055931T3 (es) 1994-09-01
PL167077B1 (pl) 1995-07-31
FI910849A7 (fi) 1991-09-02
US5190372A (en) 1993-03-02
AU7191491A (en) 1991-09-05
AU641983B2 (en) 1993-10-07
FI910849L (fi) 1991-09-02
ATE104586T1 (de) 1994-05-15
NO176998B (no) 1995-03-27
FI910849A0 (fi) 1991-02-22
DE4006434A1 (de) 1991-09-05
NO910717D0 (no) 1991-02-22

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